[INFO] fetching crate imserious 0.2.0...
[INFO] checking imserious-0.2.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate imserious 0.2.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate imserious 0.2.0
[INFO] finished tweaking crates.io crate imserious 0.2.0
[INFO] tweaked toml for crates.io crate imserious 0.2.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate imserious 0.2.0 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate imserious 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 54f6257653d625c0a85564502ba490e28e8042073b0043974a8c49a1e8fb8936
[INFO] running `Command { std: "docker" "start" "-a" "54f6257653d625c0a85564502ba490e28e8042073b0043974a8c49a1e8fb8936", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "54f6257653d625c0a85564502ba490e28e8042073b0043974a8c49a1e8fb8936", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54f6257653d625c0a85564502ba490e28e8042073b0043974a8c49a1e8fb8936", kill_on_drop: false }`
[INFO] [stdout] 54f6257653d625c0a85564502ba490e28e8042073b0043974a8c49a1e8fb8936
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] de729956816a1c1240c22d41ce2e51198e5ce869de6e16ab4600ed92020bf012
[INFO] running `Command { std: "docker" "start" "-a" "de729956816a1c1240c22d41ce2e51198e5ce869de6e16ab4600ed92020bf012", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]     Checking tracing-core v0.1.26
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling httparse v1.7.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling rustls v0.20.6
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]     Checking http v0.2.7
[INFO] [stderr]    Compiling rustversion v1.0.6
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking tower-layer v0.3.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking raw-cpuid v10.3.0
[INFO] [stderr]     Checking hashbrown v0.12.1
[INFO] [stderr]     Checking http-range-header v0.3.0
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking sync_wrapper v0.1.1
[INFO] [stderr]     Checking no-std-compat v0.4.1
[INFO] [stderr]     Checking arc-swap v1.5.0
[INFO] [stderr]     Checking matchit v0.5.0
[INFO] [stderr]     Checking nonzero_ext v0.3.0
[INFO] [stderr]     Checking futures-timer v3.0.2
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking read-restrict v0.3.0
[INFO] [stderr]     Checking shell-words v1.1.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking mio v0.8.3
[INFO] [stderr]     Checking ring v0.16.20
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking http-body v0.4.4
[INFO] [stderr]     Checking parking_lot v0.12.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking dashmap v5.3.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking quanta v0.9.3
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking webpki v0.22.0
[INFO] [stderr]     Checking sct v0.7.0
[INFO] [stderr]     Checking matchers v0.1.0
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling tracing-attributes v0.1.21
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling pin-project-internal v1.0.10
[INFO] [stderr]    Compiling async-trait v0.1.53
[INFO] [stderr]    Compiling strum_macros v0.24.0
[INFO] [stderr]    Compiling gumdrop_derive v0.8.1
[INFO] [stderr]     Checking tokio v1.18.2
[INFO] [stderr]     Checking futures-util v0.3.21
[INFO] [stderr]     Checking pin-project v1.0.10
[INFO] [stderr]     Checking gumdrop v0.8.1
[INFO] [stderr]     Checking tracing v0.1.34
[INFO] [stderr]     Checking strum v0.24.0
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking axum-core v0.2.4
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking governor v0.4.2
[INFO] [stderr]     Checking tokio-util v0.7.2
[INFO] [stderr]     Checking tokio-rustls v0.23.4
[INFO] [stderr]     Checking h2 v0.3.13
[INFO] [stderr]     Checking tower v0.4.12
[INFO] [stderr]     Checking tower-http v0.3.3
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking tracing-serde v0.1.3
[INFO] [stderr]     Checking toml v0.5.9
[INFO] [stderr]     Checking ipnet v2.5.0
[INFO] [stderr]     Checking tracing-subscriber v0.3.11
[INFO] [stderr]     Checking hyper v0.14.18
[INFO] [stderr]     Checking axum-server v0.4.0
[INFO] [stderr]     Checking axum v0.5.6
[INFO] [stderr]     Checking imserious v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/main.rs:31:17
[INFO] [stdout]    |
[INFO] [stdout] 31 | #[derive(Debug, Options)]
[INFO] [stdout]    |                 ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]    = note: this error originates in the derive macro `Options` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `imserious` (bin "imserious" test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/main.rs:31:17
[INFO] [stdout]    |
[INFO] [stdout] 31 | #[derive(Debug, Options)]
[INFO] [stdout]    |                 ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]    = note: this error originates in the derive macro `Options` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `imserious` (bin "imserious") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "de729956816a1c1240c22d41ce2e51198e5ce869de6e16ab4600ed92020bf012", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de729956816a1c1240c22d41ce2e51198e5ce869de6e16ab4600ed92020bf012", kill_on_drop: false }`
[INFO] [stdout] de729956816a1c1240c22d41ce2e51198e5ce869de6e16ab4600ed92020bf012